Ответ:
С = 2 π r
r = d/2
r =24.25/2= 12.125 мм
С = 2*π*12.125= 24.25π мм
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Ответ:
С = 2 π r
r = d/2
r =24.25/2= 12.125 мм
С = 2*π*12.125= 24.25π мм